Radial tire for snowfield engineering machinery

Abstract

The utility model discloses a snowfield engineering machinery radial tire, which relates to the technical field of tires and comprises a tread, the tread comprises a tread curve and a pattern structure, the tread curve comprises a tread highest point A at the center of the tread and a point B at a tire shoulder, and the tread curve between the point A and the point B is divided into a first arc section and a second arc section. The pattern structure comprises a first crown middle pattern block, a second crown middle pattern block, a third crown middle pattern block, a tire shoulder pattern block, and a transverse pattern groove, a first longitudinal pattern groove and a second longitudinal pattern groove which are formed among the tire shoulder indented pattern block and the pattern blocks. According to the snowfield engineering machinery radial tire, the problems of eccentric wear and abnormal wear of the tire are effectively prevented by arranging a special tread curve, the self-cleaning performance and the safety performance of the snowfield engineering machinery radial tire are effectively improved by designing the pattern structure on the tread, the problem of deflection and block falling in the using process of the tire is solved, and the service life of the tire is prolonged.

Description

Technical Field

[0001] The utility model relates to the technical field of tires, in particular to a radial tire for snow engineering machinery. Background Art

[0002] When engineering machinery vehicles are operating on icy and snowy roads, a layer of water film will form between the snow-covered road surface and the tires, resulting in weak tire grip and easy slippage, affecting the safe driving of the vehicle. Compared with ordinary engineering machinery tires, snow engineering machinery radial tires have more grooves and more complex patterns. At the same time, the softer tread is not easy to harden in cold weather, has stronger grip, can effectively prevent the vehicle from turning and skidding, shorten the braking distance, enhance the vehicle's handling and safety on smooth ice surfaces, and maximize the vehicle's performance.

[0003] For engineering machinery snow tires, the existing design of the crown curve design, pattern groove layout and angle, pattern steel plate form and arrangement are unreasonable, which makes the tires prone to problems such as poor self-cleaning, uneven wear and abnormal wear during use; when the road conditions are poor, the vehicle's road pass rate is poor; at the same time, the unreasonable design of the steel plate divides the pattern into several small blocks, which reduces the overall rigidity of the pattern blocks, causing the pattern blocks to bend and fall off during long-term driving, reducing the service life of the tire.

[0004] Based on this, a radial tire for snow engineering machinery is now provided, which can eliminate the disadvantages of the existing device. Utility Model Content

[0005] The purpose of the utility model is to provide a radial tire for snow engineering machinery to solve the problems in the background technology.

[0006] To achieve the above objectives, the present invention provides the following technical solutions:

[0007] A radial tire for snow engineering machinery includes a tread, the tread including a tread curve and a pattern structure, the tread curve including a highest point A of the tread at the center of the tread and a point B at the shoulder, the tread curve between point A and point B being divided into a first arc section and a second arc section, the pattern structure including a first crown block, a second crown block, and a third crown block distributed axially in the middle of the tread, the first crown block and the third crown block being symmetrically distributed on either side of the second crown block, the pattern structure further including shoulder blocks and shoulder indented blocks alternately distributed at tread edges along the circumferential direction of the tire, the first crown block and the third crown block both being provided with a first sipe, the second crown block, the shoulder block, and the shoulder indented block both being provided with a second sipe, and transverse grooves and first and second longitudinal grooves at angles to each other being formed between the plurality of blocks on the tread.

[0008] On the basis of the above technical solutions, the present invention also provides the following optional technical solutions:

[0009] In an optional scheme: the arc length corresponding to the first arc is L1, and the corresponding radius is R1, the arc length corresponding to the second arc is L2, and the corresponding radius is R2, the total arc length of the tread is TDW, the vertical distance between A and B is h, the relationship between TDW and h is TDW=2(L1+L2), the relationship between TDW and L1 is 0.6≤2L1 / TDW≤0.9, the relationship between TWD and L2 is 0.1≤2L2 / TDW≤0.4, the relationship between R1 and R2 is 1≤R1 / R2≤3.5, and the value range of h is 9.0-25.0mm.

[0010] In an optional scheme: the width range of the transverse groove is 14-50 mm, the depth range is 17-28 mm, the circumferential angle range between the first longitudinal groove and the second longitudinal groove is 0-60 degrees, the width range of the first longitudinal groove and the second longitudinal groove are both 24-35 mm, the depth range is both 20-30 mm, and the distance between the shoulder indented pattern block and the tread edge range is 5-15 mm.

[0011] In an optional solution, the transverse grooves are irregular zigzag grooves, and the transverse grooves gradually expand from the center of the crown to the edge of the crown.

[0012] In an optional solution, the first sipe pattern includes two V-shaped serrated fine lines, the V-shaped serrated fine lines have an angle range of 110-150 degrees, and a width range of 0.9-1.5 mm.

[0013] In an optional solution, the first sipes provided on the first crown mid-tread block and the first sipes provided on the third crown mid-tread block face in opposite directions.

[0014] In an optional solution, the second sipe pattern includes two straight serrated fine lines, and the width of the straight serrated fine lines is in the range of 0.9-1.5 mm.

[0015] In an optional solution: the circumferential angle range of the second sipe pattern set on the second crown pattern block and the second sipe pattern set on the shoulder pattern block is 60-80 degrees, and the circumferential angle range of the second sipe pattern set on the second crown pattern block and the second sipe pattern set on the shoulder indented pattern block is 60-80 degrees.

[0016] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0017] The utility model effectively prevents the problems of uneven wear and abnormal wear of the tire by setting a special tread curve, and effectively improves the self-cleaning and safety performance of the radial tire of snow engineering machinery by designing the pattern structure on the tread, optimizes the problem of bending and falling off of the tire during use, and increases the service life of the tire. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the tread curve of the utility model.

[0019] Figure 2 This is a schematic diagram of the tread pattern structure of the utility model.

[0020] Notes on the accompanying figures: 1. transverse groove; 2. first longitudinal groove; 3. second longitudinal groove; 4. first crown block; 5. second crown block; 6. third crown block; 7. shoulder block; 8. shoulder indented block; 9. first sipe; 10. second sipe. DETAILED DESCRIPTION

[0021] In order to make the purpose, technical solutions and advantages of the present invention more clear, the present invention is further described in detail below with reference to the accompanying drawings and embodiments.

[0022] In one embodiment, Figure 1-Figure 2 As shown, a radial tire for snow engineering machinery includes a tread, the tread includes a tread curve and a pattern structure, the tread curve includes the highest point A of the tread at the center of the tread and a point B at the shoulder, the tread curve between point A and point B is divided into a first arc segment and a second arc segment, the pattern structure includes a first crown middle pattern block 4, a second crown middle pattern block 5 and a third crown middle pattern block 6 distributed in the middle of the tread along the tire axial direction, the first crown middle pattern block 4 and the third crown middle pattern block 6 are symmetrically distributed in the second crown middle pattern block On both sides of the middle pattern block 5, the pattern structure also includes shoulder pattern blocks 7 and shoulder indented pattern blocks 8 alternately distributed at the tread edge along the circumferential direction of the tire. The first crown pattern block 4 and the third crown pattern block 6 are both provided with a first sipe pattern 9, and the second crown pattern block 5, the shoulder pattern block 7 and the shoulder indented pattern block 8 are both provided with a second sipe pattern 10. Transverse pattern grooves 1 and first longitudinal pattern grooves 2 and second longitudinal pattern grooves 3 at angles to each other are formed between multiple pattern blocks on the tread.

[0023] In this embodiment, by setting a special tread curve, the problems of uneven wear and abnormal wear of the tire are effectively prevented. The pattern structure cuts off the water film formed between the snowy road surface and the tire and absorbs residual moisture, thereby improving the tire's grip and anti-skid ability.

[0024] In one embodiment, Figure 1As shown, the arc length of the first arc is L1, and the radius is R1. The arc length of the second arc is L2, and the radius is R2. The total arc length of the tread is TDW. The vertical distance between A and B is h. The relationship between TDW and h is TDW=2(L1+L2). The relationship between TDW and L1 is 0.6≤2L1 / TDW≤0.9. The relationship between TWD and L2 is 0.1≤2L2 / TDW≤0.4. The relationship between R1 and R2 is 1≤R1 / R2≤3.5. The value range of h is 9.0-25.0mm, which effectively prevents the problems of uneven wear and abnormal wear of the tire.

[0025] In one embodiment, Figure 2 As shown, the width range of the transverse groove 1 is 14-50mm, the depth range is 17-28mm, the circumferential angle range between the first longitudinal groove 2 and the second longitudinal groove 3 is 0-60 degrees, the width range of the first longitudinal groove 2 and the second longitudinal groove 3 are both 24-35mm, the depth range is both 20-30mm, the distance between the shoulder indented pattern block 8 and the tread edge range is 5-15mm, the transverse groove 1 is an irregular zigzag groove, and the transverse groove 1 gradually expands from the crown center to the crown edge, effectively increasing the tire self-cleaning and vehicle passability during driving.

[0026] In one embodiment, Figure 2 As shown, the first sipe pattern 9 includes two V-shaped serrated fine grooves, and the width of the V-shaped serrated fine grooves ranges from 0.9 to 1.5 mm. The second sipe pattern 10 includes two straight serrated fine grooves, and the width of the straight serrated fine grooves ranges from 0.9 to 1.5 mm. While ensuring the overall rigidity of the pattern block and improving the service life as much as possible, the serrated fine grooves add four edge lines to the pattern block. When the tire rolls on the ground, the axial edge lines of the pattern block cut off the water film formed between the snow-covered road surface and the tire and store the residual water on the inside of the serrated fine grooves. After leaving the ground, the water stored on the inside of the serrated fine grooves escapes, thereby improving the tire's grip.

[0027] In one embodiment, Figure 2 As shown, the V-shaped serrated fine lines have an angle range of 110-150 degrees, the first sipe pattern 9 provided on the first crown middle pattern block 4 and the first sipe pattern 9 provided on the third crown middle pattern block 6 are in opposite directions, the second sipe pattern 10 provided on the second crown middle pattern block 5 and the second sipe pattern 10 provided on the shoulder pattern block 7 have a circumferential angle range of 60-80 degrees, the second sipe pattern 10 provided on the second crown middle pattern block 5 and the second sipe pattern 10 provided on the shoulder indented pattern block 8 have a circumferential angle range of 60-80 degrees, which effectively increases the tire friction coefficient during forward and reverse rotation of the tire, thereby increasing the tire's anti-skid ability.

[0028] The above embodiment discloses a radial tire for snow engineering machinery. By designing the tread curve and grooves, the self-cleaning and safety performance of the radial tire for snow engineering machinery are effectively improved, and problems such as uneven wear, abnormal wear, and block falling during use of the tire are avoided, thereby increasing the service life of the tire.

[0029] The above description is merely a specific embodiment of the present application, but the scope of protection of the present application is not limited thereto. Any changes or substitutions that can be easily conceived by a person skilled in the art within the technical scope disclosed in this application should be included in the scope of protection of the present application. Therefore, the scope of protection of the present application should be based on the scope of protection of the claims.

Claims

1. A radial tire for snow engineering machinery, comprising a tread, characterized in that: The tread comprises a tread curve and a pattern structure, wherein the tread curve comprises a tread highest point A at the center of the tread and a point B at the shoulder, and the tread curve between point A and point B is divided into a first arc segment and a second arc segment, and the pattern structure comprises a first crown pattern block (4), a second crown pattern block (5) and a third crown pattern block (6) distributed in the middle of the tread along the tire axial direction, wherein the first crown pattern block (4) and the third crown pattern block (6) are symmetrically distributed on both sides of the second crown pattern block (5), and the pattern structure further comprises a first crown pattern block (4), a second crown pattern block (5) and a third crown pattern block (6) distributed in the middle of the tread along the tire axial direction, and wherein the first crown pattern block (4) and the third crown pattern block (6) are symmetrically distributed on both sides of the second crown pattern block (5). The invention comprises shoulder pattern blocks (7) and shoulder indented pattern blocks (8) alternately distributed at the tread edge along the circumference of the tire, the first crown pattern block (4) and the third crown pattern block (6) are both provided with a first sipe pattern (9), the second crown pattern block (5), the shoulder pattern block (7) and the shoulder indented pattern block (8) are both provided with a second sipe pattern (10), and transverse pattern grooves (1) and first longitudinal pattern grooves (2) and second longitudinal pattern grooves (3) at angles to each other are formed between the plurality of pattern blocks on the tread.

2. A radial tire for snow engineering machinery according to claim 1, characterized in that: The arc length and radius of the first arc are L1 and R1, the arc length and radius of the second arc are L2 and R2, the total arc length of the tread is TDW, the vertical distance between A and B is h, the relationship between TDW and h is TDW=2(L1+L2), the relationship between TDW and L1 is 0.6≤2L1 / TDW≤0.9, the relationship between TWD and L2 is 0.1≤2L2 / TDW≤0.4, the relationship between R1 and R2 is 1≤R1 / R2≤3.5, and the value range of h is 9.0-25.0mm.

3. The radial tire for snow engineering machinery according to claim 1, characterized in that: The width of the transverse groove (1) is in the range of 14-50 mm, and the depth is in the range of 17-28 mm. The circumferential angle between the first longitudinal groove (2) and the second longitudinal groove (3) is in the range of 0-60 degrees. The width of the first longitudinal groove (2) and the second longitudinal groove (3) are both in the range of 24-35 mm, and the depth is both in the range of 20-30 mm. The distance between the shoulder indented pattern block (8) and the tread edge is in the range of 5-15 mm.

4. The radial tire for snow engineering machinery according to claim 3, characterized in that: The transverse groove (1) is an irregular zigzag groove, and the transverse groove (1) gradually expands from the crown center to the crown edge.

5. The radial tire for snow engineering machinery according to claim 1, characterized in that: The first sipe pattern (9) comprises two V-shaped sawtooth fine lines, the V-shaped sawtooth fine lines have an angle range of 110-150 degrees and a width range of 0.9-1.5 mm.

6. The radial tire for snow engineering machinery according to claim 5, characterized in that: The first sipe (9) provided on the first crown middle pattern block (4) and the first sipe (9) provided on the third crown middle pattern block (6) face in opposite directions.

7. The radial tire for snow engineering machinery according to claim 1, characterized in that: The second sipe pattern (10) comprises two linear sawtooth fine lines, and the width of the linear sawtooth fine lines ranges from 0.9 to 1.5 mm.

8. The radial tire for snow engineering machinery according to claim 7, characterized in that: The circumferential angle range of the second sipe (10) provided on the second crown pattern block (5) and the second sipe (10) provided on the shoulder pattern block (7) is 60-80 degrees, and the circumferential angle range of the second sipe (10) provided on the second crown pattern block (5) and the second sipe (10) provided on the shoulder indented pattern block (8) is 60-80 degrees.

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